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(No Model.) 2 Sheets-Sheep l.

-J. WHITE'. I ORB GONGBNTRATOR.' l

Patented May 8, 1888'. n. JP

Vfl@ i WITNBSSBS: N mvmon I ATTORNEYS.

Asheets-sheet 2.

(Nb Model.)

J WHITE l 03E ,GONGBNTRATOL vNo. 382,576.-

Patented Maya, 1,888'.

mvENTom- V ...M15 VA wITNBssBs `UNITED STATES PATENT "OEI-Ica JEssE WHITE, or sILvEE` oLIEE, COLORADO.l

ORE-CONCENTRATOR.

SPECIFICATION forming part of Letters Patent No. 382,576, dated May.8, 1888.

Application filed February 1, 1887. Serial No. 226,163. (No model.)

and other material by machines of that class commonly known as jiggers, in which a jig-box carrying the material is vertically reciprocated or vibrated in water contained in a tank, it has been found that the separation is not positive or certain,for the reason that the water is not sufliciently confined, but may and does escape up around the exterior of the jigbox and over the walls or chutes of the tank without having first passed through the screened bottom of the jig-box andthe material thereon, the jig-box with the material thereon acting merely as a plunger to displace the Water so that it escapes without having first performedits work of separation. Thus where the supplyv of material to the box is continuous it isliable to pack and clog therein, and as the water has an avenue for escape it is not forced up through the same, as is necessary to effect a separation of the particles of the material under treatment.

Now it is the object of my invention to obviate the above-named objectionable feature in jiggers by so constructing the same that the water can have no escape excepting through the screened bottom of the jig-box and the material thereon, and at the same time keeping the box full of water at alltimes and the mass of material therein in a state of semi-suspension, whereby the particles of greater spe. ciiic gravity willsink to the bottom ofthe same and through its meshes into the tank beneath, while the lighter waste material rises to the surface and is carried off with the outtlowing water. v

With this object in view my invention consists in connecting the bottom of a jig-box on all sides with the top of a stationary tank by a strip of flexible material, forming a watertight connection, as will be hereinafter more fully described and claimed.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure l is a front sectional view of 'my improved ore-concentrator on the line x x, Fig. 2. Fig. 2 is a sectional view of the same on the line y y, Fig. l. Fig. 3 is a plan view o f the jig. Fig. 4 is a detailed sectional view illustrating the connection of the tank and jig by the llexiblestrip.

The frame A of the apparatus supports the V- shaped tank B rigidly or immovably in place and the jig-box C is supported by the hangers E immediately above the same, so that' it may receive a vertical vibration or reciprocation, as hereinafter described. The upper edge of the tank and the lower edge of the frame of the jigbox are connected vby means of a strip of rubber or other iexible watertight material, D, on all sides, so as to permit i of the vibration4 of the jig-box and yetprevent the escape of water from the tank at this point, thus confining the water so that it cannot es cape otherwise than up through the screened bottom of the jig-box. l

rllhe vertical vibration is imparted to the jig by means of forked hangers E, rigidly attached to opposite sides of the jig-frame C, and conn'ected by short rods F with cranks on a shaft,

G, journaled across the top of the frame A of the apparatus and revolved by any suitable power.

Vertical guide-rods H are attached to opposite sides of the jig-frame and slide in keepers K, attached to the frame of the apparatus, whereby the desired bodily movement of the jig is assured. y y

The jig is constructedwith a screen-bottom, as usual, but may be divided by intersecting partitions L L into anumber of compartments, as shown in Fig. 3, the screens forming the bottoms of the several compartments being of different sizes of mesh and covered with a layer an inch or two in depth of clean ore larger than the size of the mesh of the screens, to form a bedfor the material under treatment.

The tank B may be divided into corresponding compartments, if desired. A constant supply of water is led into the tank below the jigbottom through the pipe M, and passes up through the perforated bottom of the jig and out over the waste-chute N. The j ig being continually immersed in the water and vibrating equally at all points, the pulverized ore is quickly separated, the heavier particles col- ICO.

lecting at the bottom of the jig and falling thence into the tank, and the lighter particles rising to the top,whence they are carried over the waste-ch ute N by the constant How of water.

The concentrated ore collected in the bottom of the tank B is removed from the same th rough the valved opening P in the usual way.

It will be understood from the above description that the jig-box and its flexible connection virtually forms a continuation of the walls of the tank, said walls being stationary or immovable, and does not, even when at its lowest point of reciprocatiomextend into the same, and that the tank and box are always kept full of water while the machine is in operation by a stream through pipe M.

Having thus fully described my invention, I

claim as'new and desire to secure by Letters JESSE WHITE.

Witnesses:

T. B. STUART, J oHN H. WELLS. 

